CN207937577U - The power testing system of new-energy automobile - Google Patents
The power testing system of new-energy automobile Download PDFInfo
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- CN207937577U CN207937577U CN201820384584.0U CN201820384584U CN207937577U CN 207937577 U CN207937577 U CN 207937577U CN 201820384584 U CN201820384584 U CN 201820384584U CN 207937577 U CN207937577 U CN 207937577U
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- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 24
- 238000005070 sampling Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims description 7
- 230000035945 sensitivity Effects 0.000 abstract description 7
- 238000012421 spiking Methods 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
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Abstract
The utility model discloses the power testing systems of new-energy automobile, including current sampling circuit, signal processing circuit and A/D sample circuits, MLX91209 current sensors J1 samples the accumulator group charging and discharging currents of new-energy automobile, and it is converted into the electric signal output proportional to sample rate current, compound transistor VT1 is flowed into after RC is filtered, VT2 is amplified signal, improve the sensitivity of signal processing, make power testing system that there is good accuracy, the amplified signal of multiple tube is through diode D1, D2 composition clamp circuits export signal clamper in 0+5V, reduce influence of the spiking to power testing system, improve the stability of power testing system, the input value that output voltage is sampled as A/D is finally obtained by transport and placing device AR1 calculation process.
Description
Technical field
The utility model is related to new-energy automobile fields, more particularly to the power testing system of new-energy automobile.
Background technology
New-energy automobile completes the reality to the control of electric motor of automobile and some miscellaneous functions mainly by power-driven system
Existing, new-energy automobile accumulator group is the source of electric drive, and the power testing system of new-energy automobile then shows new energy
The current state of automobile storage battery group, it is closely bound up with the normal operation of power-driven system, and current new-energy automobile stores
Battery pack is in electric power detection, and usually because power testing system sensitivity is inadequate, electricity shows that inaccuracy causes accumulator group pipe
It is improper to manage, and influences its service life.
So the utility model provides a kind of new scheme to solve the problems, such as this.
Utility model content
For the above situation, to overcome the defect of the prior art, the utility model to be designed to provide new-energy automobile
Power testing system, have be skillfully constructed, the characteristic of human oriented design, can effectively improve to new-energy automobile accumulator
The sensitivity of group electric power detection, to promote the accuracy of power testing system.
Its technical solution solved is the power testing system of new-energy automobile, including current sampling circuit, signal processing
Circuit and A/D sample circuits, the current sampling circuit sample the accumulator group charging and discharging currents of new-energy automobile, and
It is converted into the electric signal output proportional to sample rate current, is flowed into signal processing circuit after RC is filtered, the signal processing
Circuit is amplified signal using triode VT1, VT2, and it is defeated to signal clamper by diode D1, D2 to form clamp circuit
Go out, last transport and placing device AR1 calculation process obtains the input value of A/D samplings；The current sampling circuit includes model
The current sensor J1 of MLX91209, the RC that current sensor J1 output ends output signal is formed through resistance R1 and capacitance C1 are filtered
The input terminal of signal processing circuit is flowed into after processing, the power end of current sensor J1 is connect with+5V power supplys, current sensor J1
Ground terminal ground connection.
Preferably, the signal processing circuit includes triode VT1, and triode VT1 receives the output of current sampling circuit
Signal ,+5V power supplys are connect by resistance R2 with the base stage of triode VT1, and pass through the current collection of resistance R3 and triode VT1, VT2
Pole is connected with one end of capacitance C2, and the emitter of triode VT1 is connect with the base stage of triode VT2, the emitter of triode VT2
Ground connection, the other end of capacitance C2 are connect with the cathode of the anode of diode D1 and D2, and cathode and the+5V power supplys of diode D1 connect
It connects, the plus earth of diode D2.
Compared with prior art, the beneficial effects of the utility model are as follows：
1.MLX91209 current sensors J1 samples the accumulator group charging and discharging currents of new-energy automobile, and converts
For the electric signal output proportional to sample rate current, inflow compound transistor VT1, VT2 are amplified signal after RC is filtered,
And clamp circuit is formed by diode D1, D2, signal clamper is exported, last transport and placing device AR1 calculation process obtains output voltage work
For the input value of A/D samplings, circuit design is simply ingenious, has good practical value and Development volue.
2. triode VT1 receives the output signal of current sampling circuit, triode VT1, VT2 are connect using common collector
Method composition multiple tube is amplified signal, improves the sensitivity of signal processing, so that power testing system is had accurate well
Property, the amplified signal of multiple tube is through diode D1, D2 composition clamp circuit by signal clamper in 0-+5V outputs, reduction spike
Influence of the signal to power testing system, improves the stability of power testing system.
Description of the drawings
Fig. 1 is the circuit module figure of the power testing system of the utility model new-energy automobile.
Fig. 2 is the circuit diagram of the power testing system of the utility model new-energy automobile.
Specific implementation mode
Aforementioned and other technology contents, feature and effect in relation to the utility model, in following cooperation with reference to figures 1 through attached
Fig. 2 is in the detailed description of embodiment, can clearly present.The structure content being previously mentioned in following embodiment is to say
Bright book attached drawing is reference.
Embodiment one, the power testing system of new-energy automobile, including current sampling circuit, signal processing circuit and A/D
Sample circuit, the current sampling circuit sample the accumulator group charging and discharging currents of new-energy automobile, and be converted into
The proportional electric signal output of sample rate current flows into after RC is filtered in signal processing circuit, and triode VT1, VT2 are using collection altogether
The connection composition multiple tube of electrode is amplified signal, improves the sensitivity of signal processing, the amplified signal warp of multiple tube
Diode D1, D2 composition clamp circuit export signal clamper in 0-+5V, reduce shadow of the spiking to power testing system
It rings, the input value that output voltage is sampled as A/D is finally obtained by transport and placing device AR1 calculation process；
The current sampling circuit selects the current sensor J1 of model MLX91209, since current sensor J1 is exported
It holds 2 output signal of pin that there are certain high frequency spurs, flows into and believe after being filtered using resistance R1 and capacitance the C1 RC formed
The input terminal of number processing circuit, the power end pin 1 of current sensor J1 are connect with+5V power supplys, the ground connection of current sensor J1
Pin 3 is held to be grounded.
Embodiment two, on the basis of embodiment one, the signal processing circuit is using triode VT1, VT2 using collection altogether
The connection composition multiple tube of electrode is amplified current sampling circuit output signal, improves the sensitivity of signal processing, makes electricity
There is amount detection systems good accuracy, the amplified signal of multiple tube to form clamp circuit by signal through diode D1, D2
Clamper is exported in 0-+5V, is reduced influence of the spiking to power testing system, is improved the stability of power testing system ,+5V
Power supply is connect by resistance R2 with the base stage of triode VT1, and passes through the collector and capacitance of resistance R3 and triode VT1, VT2
One end of C2 connects, and the emitter of triode VT1 is connect with the base stage of triode VT2, the emitter ground connection of triode VT2, electricity
The other end for holding C2 is connect with the cathode of the anode of diode D1 and D2, and the cathode of diode D1 is connect with+5V power supplys, diode
The plus earth of D2.
Embodiment three, on the basis of embodiment two, the A/D sample circuits use the noninverting input of transport and placing device AR1
The output signal of signal processing circuit is received by resistance R4, and is connect with+5V power supplys by resistance R5, signal processing circuit
Output signal voltage value does the output voltage conduct obtained after add operation in the noninverting input of transport and placing device AR1 with+5V power supplys
The input value of processor A/D sampling input terminals, the processor can be microcontroller, and microcontroller is handled by internal processes and can be obtained
To the value of new-energy automobile accumulator group charge level（This technology is the prior art, therefore this will not be detailed here）, transport and placing device AR1's
Reverse input end is connect with one end of resistance R6, R7, and the other end of resistance R6 is connect with the output end of transport and placing device AR1, resistance R7
Other end ground connection, the output signal of transport and placing device AR1 connect with output port.
When the utility model is specifically used, accumulator group charge and discharge of the MLX91209 current sensors J1 to new-energy automobile
Electric current is sampled, and is converted into the electric signal output proportional to sample rate current, and compound transistor is flowed into after RC is filtered
VT1, VT2 are amplified signal, improve the sensitivity of signal processing, and power testing system is made to have good accuracy, multiple
It closes the amplified signal of pipe to export signal clamper in 0-+5V through diode D1, D2 composition clamp circuit, reduces spiking pair
The influence of power testing system improves the stability of power testing system, finally obtains output electricity by transport and placing device AR1 calculation process
The input value sampled as A/D is pressed, is handled by internal processes through microcontroller and new-energy automobile accumulator group electricity etc. can be obtained
The value of grade.
The above is to combine specific implementation mode further detailed description of the utility model, and it cannot be said that originally
Utility model specific implementation is limited only to this；For belonging to the utility model and for those skilled in the technology concerned,
Under the premise of technical solutions of the utility model thinking, made by expand and operating method, data replacement, should all fall
Within scope of protection of the utility model.
Claims (3)
1. the power testing system of new-energy automobile, including current sampling circuit, signal processing circuit and A/D sample circuits,
Be characterized in that, the current sampling circuit samples the accumulator group charging and discharging currents of new-energy automobile, and be converted into
The proportional electric signal output of sample rate current flows into after RC is filtered in signal processing circuit, and the signal processing circuit uses
Triode VT1, VT2 are amplified signal, and form clamp circuit by diode D1, D2 and exported to signal clamper, finally transport
It puts device AR1 calculation process and obtains the input value of A/D samplings；
The current sampling circuit includes the current sensor J1 of model MLX91209, current sensor J1 output ends output letter
Number RC formed through resistance R1 and capacitance C1 flows into the input terminal of signal processing circuit, the electricity of current sensor J1 after being filtered
Source is connect with+5V power supplys, the ground terminal ground connection of current sensor J1.
2. the power testing system of new-energy automobile as described in claim 1, which is characterized in that the signal processing circuit includes
Triode VT1, triode VT1 receive the output signal of current sampling circuit, and+5V power supplys pass through resistance R2's and triode VT1
Base stage connects, and is connect with one end of the collector of triode VT1, VT2 and capacitance C2 by resistance R3, the hair of triode VT1
Emitter-base bandgap grading is connect with the base stage of triode VT2, the emitter ground connection of triode VT2, the sun of the other end and diode D1 of capacitance C2
Pole is connected with the cathode of D2, and the cathode of diode D1 is connect with+5V power supplys, the plus earth of diode D2.
3. the power testing system of new-energy automobile as claimed in claim 2, which is characterized in that the A/D sample circuits include
The noninverting input of transport and placing device AR1, transport and placing device AR1 receive the output signal of signal processing circuit by resistance R4, and pass through electricity
Resistance R5 connect with+5V power supplys, the reverse input end of transport and placing device AR1 is connect with one end of resistance R6, R7, the other end of resistance R6 and
The output end of transport and placing device AR1 connects, and the other end ground connection of resistance R7, the output signal of transport and placing device AR1 is connect with output port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820384584.0U CN207937577U (en) | 2018-03-21 | 2018-03-21 | The power testing system of new-energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820384584.0U CN207937577U (en) | 2018-03-21 | 2018-03-21 | The power testing system of new-energy automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207937577U true CN207937577U (en) | 2018-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820384584.0U Expired - Fee Related CN207937577U (en) | 2018-03-21 | 2018-03-21 | The power testing system of new-energy automobile |
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| CN (1) | CN207937577U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505427A (en) * | 2020-11-17 | 2021-03-16 | 上海美仁半导体有限公司 | Capacitance measuring circuit and measuring method |
-
2018
- 2018-03-21 CN CN201820384584.0U patent/CN207937577U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505427A (en) * | 2020-11-17 | 2021-03-16 | 上海美仁半导体有限公司 | Capacitance measuring circuit and measuring method |
| CN112505427B (en) * | 2020-11-17 | 2023-04-07 | 上海美仁半导体有限公司 | Capacitance measuring circuit and measuring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200915 Address after: 211200 Lishui Economic Development Zone, Nanjing City, Jiangsu Province Patentee after: Qiji automobile technology (Nanjing) Co.,Ltd. Address before: 100080 Dongsheng science and Technology Park, Zhongguancun, No. 66, xixiaokou Road, Haidian District, Beijing. B301, 3 / F, block B, floor B-6, Northern Territory Patentee before: ZHONG NENG DONG DAO GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181002 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |